Study co-author Ross Stein is CEO of the catastrophe modeling company Temblor.
"The problem is that's three to five times higher than the chances of the San Andreas rupturing before the Ridgecrest earthquake. So we are living in a time in which the chances of a great San Andreas earthquake are currently elevated even if they are still small," Stein said.
He tells KNX if a big quake hits on the Garlock Fault there's a 50-50 chance it could cause a large quake on the San Andreas.
He does say though the chance of a big San Andreas quake in the next year is still very low at just over one percent.
Stein says this is a good reminder to prepare for an earthquake.